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486 AT MOTHERBOARD MODEL [4GPV5]

VISIONEX

486 AT MOTHERBOARD MODEL [4GPV5]

Processor

AM486SX/80486SX/CX486DX/AM486DX/80486DX/CX486DX2/ AM486DX2/80486DX2/CX486DX4/AM486DX4/80486DX4

Processor Speed

25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

128/256/512/1024KB

BIOS

AMI/Award/MR

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Green PC connector

JP3

Green PC connector

JP20

Power LED & keylock

JP16

Turbo LED

JP21

Speaker

JP17

Reset switch

JP26

Green PC LED

JP18

32-bit VESA local bus slots

SL1 - SL3

Turbo switch

JP19

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Ľ

CMOS memory normal operation

JP1

Pins 1 & 2 closed

 

CMOS memory clear

JP1

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP5

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP5

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 512K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

3MB

(1) 512K x 36

(1) 256K x 36

None

None

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

None

3MB

(1) 256K x 36

(1) 512K x 36

None

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 1M x 36

(1) 256K x 36

None

None

5MB

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 256K x 36

(1) 512K x 36

(1) 512K x 36

None

5MB

(1) 256K x 36

(1) 1M x 36

None

None

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

None

6MB

(1) 1M x 36

(1) 512K x 36

None

None

6MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

None

6MB

(1) 512K x 36

(1) 1M x 36

None

None

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

7MB

(1) 256K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

9MB

(1) 2M x 36

(1) 256K x 36

None

None

9MB

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

None

9MB

(1) 256K x 36

(1) 2M x 36

None

None

10MB

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

None

10MB

(1) 2M x 36

(1) 512K x 36

None

None

10MB

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

10MB

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

None

10MB

(1) 512K x 36

(1) 2M x 36

None

None

11MB

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

None

12MB

(1) 2M x 36

(1) 1M x 36

None

None

DRAM CONFIGURATION (CONíT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

13MB

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

14MB

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

14MB

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

None

None

16MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

17MB

(1) 4M x 36

(1) 256K x 36

None

None

17MB

(1) 256K x 36

(1) 2M x 36

(1) 2M x 36

None

17MB

(1) 256K x 36

(1) 4M x 36

None

None

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

None

18MB

(1) 4M x 36

(1) 512K x 36

None

None

18MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

None

18MB

(1) 512K x 36

(1) 4M x 36

None

None

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

None

20MB

(1) 4M x 36

(1) 1M x 36

None

None

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

22MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 4M x 36

(1) 2M x 36

None

None

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

24MB

(1) 2M x 36

(1) 4M x 36

None

None

25MB

(1) 256K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

26MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

33MB

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

None

34MB

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

None

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

40MB

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

49MB

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

50MB

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

56MB

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

DRAM JUMPER CONFIGURATION

Setting

JP70

Banks 0, 1, 2, & 3 are used as single banks

Pins 1 & 2 closed

Banks 0 & 1 and Banks 2 & 3 used as banks 0 & 1 respectively

Pins 2 & 3 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

256KB (B)

(4) 64K x 8

None

(1) 32K x 8

512KB (A)

(4) 128K x 8

None

(1) 32K x 8

512KB (B)

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 128K x 8

Note: The location of the TAG is unidentified.

CACHE JUMPER CONFIGURATION

Size

JP6

JP11

JP12

128KB

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

256KB (A)

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB (B)

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB (A)

Open

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB (B)

Pins 1 & 2 closed

Open

Pins 2 & 3 closed

1MB

Pins 2 & 3 closed

Open

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP2A

JP2B

JP2C

JP13

JP22

25MHz

Closed

1 & 2

2 & 3

Closed

Open

33MHz

Closed

2 & 3

1 & 2

Open

Open

40MHz

Open

1 & 2

2 & 3

Open

Closed

50iMHz

Closed

1 & 2

2 & 3

Closed

Open

50MHz

Open

2 & 3

1 & 2

Open

Closed

66iMHz

Closed

2 & 3

1 & 2

Open

Open

75iMHz

Closed

1 & 2

2 & 3

Closed

Open

80iMHz

Open

1 & 2

2 & 3

Open

Closed

100iMHz

Closed

2 & 3

1 & 2

Open

Open

120iMHz

Open

1 & 2

2 & 3

Open

Closed

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION

Type

JP15

JP80

AM486SX

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

80486SX

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

AM486DX

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

CX486DX

Pins 2 & 3 closed

Pins 1 & 3, 2 & 4 closed

80486DX

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

AM486DX2

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

CX486DX2 (3.3v)

Pins 2 & 3 closed

Pins 3 & 5, 4 & 6 closed

CX486DX2 (5v)

Pins 2 & 3 closed

Pins 1 & 3, 2 & 4 closed

80486DX2

Pins 1 & 2 closed

Pins 1 & 3, 2 & 4 closed

CX486DX4

Pins 2 & 3 closed

Pins 3 & 5, 4 & 6 closed

AM486DX4 (3.3v)

Pins 1 & 2 closed

Pins 3 & 5, 4 & 6 closed

80486DX4 (3.3v)

Pins 1 & 2 closed

Pins 3 & 5, 4 & 6 closed